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6SE6420 Variable Frequency Drive Inverter For HVAC & Water Treatment

Name: 6SE6420 Variable Frequency Drive Inverter For HVAC & Water Treatment
Brand: Shanghai Fradwell Industrial Automation Co., Ltd.
SKU: 6SE6420
Price: 522.00 USD
Availability: InStock

Product Details

Place of Origin: Germany

Model Number: 6SE6420

Payment & Shipping Terms

Minimum Order Quantity: 1

Price: $44 - $1000

Delivery Time: 3-5Workday

Payment Terms: L/C,D/A,D/P,T/T,Western Union,MoneyGram

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Product Details

Product Description

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                                                                                                                                                                                    6SE6420 Variable Frequency Drive Inverter, HVAC Variable Frequency Drive Inverter, Water Treatment VFD inverter
                      

Product Name:	Frequency Converter Inverter	Level Of Protection:	IP20
Rated Power:	0.12kW - 15kW	Warranty:	Original Factory Warranty
Pakage:	Original Pakage	Shipping Term:	International Express（DHL/FEDEX/TNT/UPS/ARAMEX）/ Sea Freight / Air Freight / International Special Line

Product Name:	Frequency Converter Inverter
Level Of Protection:	IP20
Rated Power:	0.12kW - 15kW
Warranty:	Original Factory Warranty
Pakage:	Original Pakage
Shipping Term:	International Express（DHL/FEDEX/TNT/UPS/ARAMEX）/ Sea Freight / Air Freight / International Special Line

6SE6420 Variable Frequency Drive Inverter For HVAC & Water Treatment

6SE6420 Frequency Converter Inverter Reliable Speed Control for HVAC & Water Treatment

6SE6420 Frequency Converter

The 6SE6420 series, part of MicroMaster 4 family, is an entry-level frequency converter designed for general speed control applications. With core advantages of compact design, easy operation, and high cost-effectiveness, it can be quickly put into use without complex commissioning. Ideally suited for industrial scenarios requiring moderate control precision and balancing reliability with cost, it supports the classic V/F control mode.

Key Advantages

High Cost-Effectiveness: Industrial-grade reliability at an entry-level price, significantly lowering the threshold for SMEs' automation transformation
Compact & Space-Saving: Ultra-small design, can be directly embedded in small control cabinets or equipment, saving installation space
Extremely Easy Operation: No professional technicians required—quickly set operating parameters via panel or terminals for high commissioning efficiency
Stable & Durable: Optimized for general industrial scenarios, multiple protection functions effectively resist power grid fluctuations and load impacts
Wide Adaptability: Supports single-phase/three-phase input, covering 0.12-15kW power range, perfectly matching fans, pumps, conveyors, and other common general equipment

Overseas Market Models

Input Voltage	Input Type	Power	Model	Remarks
200-240V	1-phase	0.12kW	6SE6420-2UC11-2AA1	No filter, IP20
		0.25kW	6SE6420-2UC12-5AA1	No filter, suitable for small fans
		0.55kW	6SE6420-2UC15-5AA1	No filter, cost-effective choice
		1.1kW	6SE6420-2UC21-1BA1	No filter, compatible with small conveyors
		2.2kW	6SE6420-2UC22-2BA1	No filter, universal 1-phase/3-phase input
200-240V	3-phase	0.37kW	6SE6420-2UC13-7AA1	No filter, industrial-grade stable operation
		0.75kW	6SE6420-2UC17-5AA1	No filter, suitable for medium-small pumps
		7.5kW	6SE6420-2UC27-5DA1	No filter, high-power 1-phase/3-phase input
380-480V	3-phase	0.37kW	6SE6420-2UD13-7AA1	No filter, mainstream model for European market
		1.5kW	6SE6420-2UD21-5AA1	No filter, suitable for small compressors
		5.5kW	6SE6420-2UD25-5CA1	No filter, high-frequency selection for general machinery
		15kW	6SE6420-2UD31-5DA1	No filter, compatible with high-power general equipment

Core Specifications

Parameter Category	Specific Parameter	Details
Power Input	Input Voltage	200-240V±10% (1-phase/3-phase); 380-480V±10% (3-phase)
Power Input	Input Frequency	47-63Hz (compatible with global power grids)
Output Performance	Output Frequency Range	0-650Hz (supports high-speed operation for precision equipment)
	Output Power Range	- 200-240V (1-phase): 0.12kW - 2.2kW - 200-240V (3-phase): 0.12kW - 7.5kW - 380-480V (3-phase): 0.37kW - 15kW
	Frequency Resolution	Digital setting: 0.01Hz; Analog setting: 10-bit precision (high control accuracy)
	PWM Frequency	Fixed at 4kHz (optimized for noise reduction and energy efficiency)
Control Mode	Core Control	V/F control (linear/quadratic characteristics selectable; ideal for general loads)
Protection Functions	Key Protection	Overcurrent, Overvoltage, Undervoltage, Overheating, Short-circuit, Motor Overload Protection (comprehensive electrical safety)
Physical & Environmental	Protection Class	IP20 (suitable for cabinet mounting; prevents finger contact with live parts)
	Operating Temperature	-10℃ ~ 50℃ (operating); -40℃ ~ 70℃ (storage) (adapts to harsh industrial environments)
	Installation Method	Wall-mounted (compact design, saves control cabinet space)
I/O Interface	Digital Inputs	3 channels (programmable; PNP/NPN selectable)
	Analog Inputs	1 channel (0-10V/0-20mA selectable; compatible with most sensors)
	Relay Outputs	1 channel (30V DC/5A, 250V AC/2A; for alarm or control signal output)
Communication	Standard Interface	Integrated RS485 (supports USS protocol; enables remote monitoring)
Communication	Optional Expansion	No additional communication modules required (cost-saving for basic automation)

Industry Applications

General Machinery Manufacturing

Small conveyors (food packaging line conveyors, e-commerce warehouse sorting belts)
Desktop packaging machines (plastic bag sealers, label applicators)
Small printing machines (business card printers, sticker printing equipment)
Woodworking machinery (mini table saws, sanders)
Small metalworking lathes (mini lathes, drill press speed control)

HVAC & Building Infrastructure

Ventilation fans for residential/commercial buildings (exhaust fans, fresh air system fans)
Small cooling towers (matching shopping malls/offices)
Air conditioning circulation pumps (hotel room HVAC water circulation)
Garage ventilation systems

Water Treatment & Environmental Equipment

Small water supply pumps (community secondary water supply, farm irrigation pumps)
Sewage treatment aeration pumps (rural/small industrial zone wastewater plants)
Dosing pumps (swimming pool disinfection, small wastewater treatment dosing systems)
Rainwater collection system pumps

Light Industry & Food Processing

Food processing lines (biscuit production conveyors, juice filling line speed control)
Textile machinery (small looms, yarn drafting machines)
Small air compressors (dental clinic/laboratory quiet compressors)
Auxiliary packaging equipment (vacuum sealers, shrink wrap machines)

Agriculture & Horticulture

Greenhouse ventilation fans
Irrigation pumps (orchard drip irrigation, vegetable garden sprinkler systems)
Feed mixers (small farm feed blending equipment)
Livestock farm ventilation/cooling fans

Small Business & Service Industry

Coffee shop grinders
Gym treadmill speed control
Dry cleaner garment conveyors
Small cold storage ventilation fans
Convenience store refrigerator condenser fans

Frequently Asked Questions

Purchase & Model Selection

Q1: I run a small bakery in the US (1-phase 220V power). Which model should I choose for my dough mixer (1.5kW)?

A1: Go with 6SE6420-2UC21-5BA1 (1.5kW, 200-240V 1-phase/3-phase). It works directly with your 220V single-phase power—no need for extra transformers. Many small US bakeries use this model for mixers and dough proofers; it's cheap and gets the job done without complicated settings.

Q2: Why are some models labeled "UC" and others "UD"? I'm confused about voltage compatibility for my European workshop (380V 3-phase).

A2: "UC" = 200-240V (for North America, Japan, etc.), "UD" = 380-480V (Europe, Middle East, etc.). For your 380V 3-phase setup, pick a "UD" model—like 6SE6420-2UD21-5AA1 (1.5kW) or 6SE6420-2UD25-5CA1 (5.5kW) if you need more power. Don't mix them up—plugging a "UC" model into 380V will burn it out instantly.

Installation & Wiring

Q4: I installed the inverter but it won't start—just flashes an error. I connected L, N to power and U, V, W to the motor. What's wrong?

A4: You forgot to set the motor parameters! Even basic models need this. Go to "quick commissioning" (P0010=1), enter your motor's rated voltage (e.g., 230V) and current (check the motor nameplate), then save and reset. Most first-time users skip this step.

Q5: The inverter gets hot and shuts down after 10 minutes. It's mounted in a small control cabinet—no other equipment inside.

A5: Ventilation issue! MM420 needs at least 10cm of space above and below for airflow. If your cabinet is too tight, drill ventilation holes or add a small 12V fan. Also, make sure the cooling vents on the inverter aren't blocked by wires.

Operation & Troubleshooting

Q8: The motor runs but is noisy and vibrates. It's a small conveyor for my boutique—1.1kW, 240V single-phase.

A8: Two fixes: First, check if the motor cables are tight (loose wires cause vibration). Second, change the V/F curve to linear (P1300=0) instead of quadratic. Quadratic is for fans/pumps—linear works better for constant-torque loads like conveyors.

Q9: The inverter trips with "F0002" (overvoltage) when I turn off the pump. Why?

A9: The pump is acting like a generator when it stops! For small pumps (under 2.2kW), lengthen the deceleration time (P1121) from 10s to 30s—gives the pump time to slow down without sending voltage back to the inverter.

Maintenance & Compatibility

Q12: I want to upgrade to a higher power model. Can I swap a 2.2kW inverter with a 5.5kW one without changing wiring?

A12: If the wiring is thick enough (at least 1.5mm² for 5.5kW), yes. The mounting holes are the same for small models (up to 7.5kW), so it'll fit in your existing cabinet. Just remember to redo the quick commissioning with the new motor's parameters.

Q13: Is this inverter compatible with solar power? I have a 240V off-grid solar system for my farm in Brazil.

A13: Yes, but you need a stable DC-to-AC inverter first (solar panels produce DC power). The MM420 works with most solar inverters as long as the output voltage is 200-240V±10% and frequency is 50/60Hz. Just make sure the solar system can handle the inverter's startup current (about 3x the rated current).

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6SE6420 Variable Frequency Drive Inverter For HVAC & Water Treatment